Shielding effectiveness of a thin conductive perforated foil for satellite applications

Multilayer and Single-Layer Insulated (MLI-SLI) materials play a crucial role in satellite design, addressing both thermal management and Electromagnetic Compatibility (EMC) requirements. This paper begins with an experimental characterization of the dielectric and metallic foils commonly used in SLI and MLI blankets, focusing on measuring their thicknesses and electrical properties, such as complex permittivity and electrical conductivity. Following this, we utilize detailed 3D full-wave simulations and Shielding Effectiveness (SE) measurements, performed using a coaxial cell, to evaluate the electromagnetic performance of perforated Aluminium-Kapton bilayer foils up to 4 GHz. This investigation explores the effects of hole size and random distribution, providing valuable insights into the material's potential to enhance satellite EMC optimization.